Unfortunately I'm away from home for a very long period (3 months). I only have access to my Deye from Solar Assistant.
I'm in Lithium 00 mode with the PYLON 1.2 protocol.
My TOU is set to 90% during the day and I no longer have this 0.5V offset problem with Lithium mode.
It is clear that you...
https://github.com/Sleeper85/esphome-jk-bms-can/blob/main/documents/README/Cut-Off_Charging_Logic.md
You have a large delta cell V.
It is necessary to have the complete list of your parameters to analyze them.
The code has been tested, there is no need to modify it.
Weco and Soltaro would be the only two types of battery using the CAN bus and the protocol is completely different.
If you want to modify the CAN bus part to adapt it to one of these protocols I can guide you on the procedure to follow.
Ditto if you prefer to try PYLON or LIB in RS485.
The...
As already said the color of the cables that you have circled in red do not matter. If you take a red, put black tape (or thermo sheath) on the - side. If you take a black put red tape (or thermo sheath) on the + side.
Look on the photo below, the + cable is black with red tips.
As written in the readme, JST 1.25mm pitch.
# RS485-TTL jack on JK-BMS (4 Pin, JST 1.25mm pitch)
┌─── ─────── ────┐
│ │
│ O O O O │
│GND RX TX VBAT│
└────────────────┘
│ │ │ | VBAT is full battery volatge eg 51.2V (No connect)
│ │ └──── ESP32 GPIO16...
The USB printer cable is the correct one.
Do you have Windows or Linux?
I was talking about checking if it was still possible to read the modbus registers as I explained in the post below :
https://diysolarforum.com/threads/isolar-smx-ii-5-6kw-dead-after-firmware-update.54602/#post-704979
@chaosnature
In the future, please take the time to read, understand and properly configure YAML.
The Wire and BLE version are used by other people without problems and also with Solis.
You have to take your time and not try 10,000 things at once. Step by step.
Concerning the Wire version I...
@silverstone
Excuse me if I ask a question that has already been answered, I'm far from having followed all of your comments.
Concerning your battery #2 have you already carried out a first top balancing and managed to align all your cells at 3.65V with a low charging current?
With pleasure, a next version 1.15 is coming soon with the correction of the main bug :
ESP32 has a bug that causes WDT reboot if no other devices on CAN bus to ACK the packets.
If you try to run without inverter it will not work as it will constantly WDT reboot!
Measurement with the current clamp. The current coming from the PV is at 5.55A before the "sweep" begins, it suddenly drops to 3.69A then gradually decreases to 1.34A (0.8A on the EAsun screen) while the voltage rises towards Voc then the current rises suddenly towards +/- 3.5A while the voltage...
No, it's not normal for it to take so long. An ESP32 starts very quickly and should be working after 1 minute. The CAN connection may not start directly, after sending 20 CAN IDs without response from the inverter the CAN connection is paused for 2 minutes before trying to connect again. You can...
I used the URB4805YMD-10WR3 isolated 48V to 5V DC converter. The prototype works but only if I connect GND In with GND Out, if I don't connect the GNDs together I have a voltage difference of 30mv between the two GNDs and a lot of error with the JK BMS UART TTL input.
As a result I lose the...
@Yevhen
I have exactly the same model as you.
Can you verify that the points below are correct ?
If you make modifications, you may need to reboot the ESP32 afterwards.
CAN H on RJ45 PIN 4 and CAN L on PIN 5.
No crossing !
Another point to know, in version 1.13.3 there is a...
Hello,
I have already posted about the behavior of my MPPT controller but a member thinks that my production is abnormal and suggested that I create a new topic.
My panels are oriented to the east on a roof with a slight slope of 15°, therefore on the blue line of the diagram below.
To the...
What's interesting is that @Aerial Gopher who had a SRNE 3Kw 24v system, 120 volt out model. ( HF2430U60-100 ? ) could see this scan every 12 minutes in Solar Assistant. Was the PV icon flashing at this time ?
Edit:
It appears to be the model HF2430U60-100 he purchased in May 2022 see post...
Attached is the Wire and Bluetooth version of YAML V1.16.2 (beta).
Attention ! when the ESP32 is connected via Bluetooth to JK-BMS you cannot use the JK application (only one connection).
Works for me with ESP32 DevKit V1.
Important: the "esp-idf" framework is used by default now, otherwise...
I just noticed that JK BMS was not very accurate on low load measurement. It is necessary to calibrate it. The other measurements from 10A are correct.
So... I redid the self consumption (from battery) measurements of my EAsun SMX II 5.6kW with two different multimeters and unfortunately it...
I'm currently working to finalize the multi-bms version with everything connected on a single ESP32.
This is mainly intended for the PVbrain2 card but this should therefore work with 2 or 3 BMS and a classic ESP32 (to be tested).
https://github.com/SeByDocKy/pvbrain2
Thank you for the links...
With your EAsun / SRNE, is it possible to charge the batteries when the inverter button is OFF and it is powered only from the PV?
For me it didn't work during my first tests, maybe there wasn't enough power to start a charge. However, the screen was on.
I know that on Voltronic inverters it...
I know that @mib is tempted to connect his SRNE to Home Assistant, maybe we can have a nice graph soon?
The wifi datalogger will not allow this to be seen as it only takes data every 5 minutes.
If you are interested, I could make you a script in Python to analyze the data via modbus by...
Solar Assistant collects data every 2sec for the dashboard versus 10sec in the charts.
Via a Python script I could get even more info like every 0.5sec.
I would like to tell those who are interested in a multi-bms version not to buy too much ESP32 or other hardware in advance. If we want to get it right, it's more than likely that a dedicated PCB will be required.